EP0174263A3 - A process for producing a dimensionally stable polyester article - Google Patents

A process for producing a dimensionally stable polyester article Download PDF

Info

Publication number
EP0174263A3
EP0174263A3 EP85630141A EP85630141A EP0174263A3 EP 0174263 A3 EP0174263 A3 EP 0174263A3 EP 85630141 A EP85630141 A EP 85630141A EP 85630141 A EP85630141 A EP 85630141A EP 0174263 A3 EP0174263 A3 EP 0174263A3
Authority
EP
European Patent Office
Prior art keywords
article
polyester
heat
heat setting
articles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85630141A
Other languages
German (de)
French (fr)
Other versions
EP0174263A2 (en
Inventor
Donald Edward Richeson
Clem Branum Shriver
Willian George Perkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of EP0174263A2 publication Critical patent/EP0174263A2/en
Publication of EP0174263A3 publication Critical patent/EP0174263A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Polyester articles are often heat set at an elevated temperature under a mechanical constraint which prevents their shrinkage during the heat setting process. Such a heat setting process provides the polyester article with improved dimensional stability. However, the heat set article will still shrink when exposed to high service temperatures even though the shrinkage is less than that which occurs in non-heat set articles.
The use of the process of this invention results in polyester articles with greatly improved dimensional stabil­ ity. It entails heating an over-sized heat set polyester article in an unconstrained manner to a temperature which is greater than the expected service temperature of the article and no more than the heat setting temperature used for heat setting the over-sized article for a time sufficient to produce a dimensionally stable article of the desired size.
EP85630141A 1984-09-07 1985-09-03 A process for producing a dimensionally stable polyester article Withdrawn EP0174263A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64839584A 1984-09-07 1984-09-07
US648395 1984-09-07

Publications (2)

Publication Number Publication Date
EP0174263A2 EP0174263A2 (en) 1986-03-12
EP0174263A3 true EP0174263A3 (en) 1987-12-16

Family

ID=24600616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85630141A Withdrawn EP0174263A3 (en) 1984-09-07 1985-09-03 A process for producing a dimensionally stable polyester article

Country Status (1)

Country Link
EP (1) EP0174263A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5348538A (en) * 1992-09-29 1994-09-20 Scimed Life Systems, Inc. Shrinking balloon catheter having nonlinear or hybrid compliance curve
GB0405883D0 (en) * 2004-03-16 2004-04-21 Dupont Teijin Films Us Ltd Polymeric film substrate

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1134160A (en) * 1966-06-06 1968-11-20 Nat Distillers Chem Corp Volume stabilization of molded plastics containers
US3646188A (en) * 1970-02-03 1972-02-29 Du Pont Process for improving uniformity of polymeric film
UST915001I4 (en) * 1972-07-10 1973-10-09 Forming polyethylene terephthalate
FR2389478A1 (en) * 1977-05-04 1978-12-01 Rhone Poulenc Ind
GB2009029A (en) * 1977-12-02 1979-06-13 Yoshino Kogyosho Co Ltd Process for preparing saturated polyester resin bottles
GB2055672A (en) * 1979-08-07 1981-03-11 Yoshino Kogyosho Co Ltd Method of blow moulding bottle of saturated polyester
UST101205I4 (en) * 1981-01-26 1981-11-03 Molding process
GB2085798A (en) * 1980-10-22 1982-05-06 Goodyear Tire & Rubber Process for deep stretch forming containers from polyesters

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1134160A (en) * 1966-06-06 1968-11-20 Nat Distillers Chem Corp Volume stabilization of molded plastics containers
US3646188A (en) * 1970-02-03 1972-02-29 Du Pont Process for improving uniformity of polymeric film
UST915001I4 (en) * 1972-07-10 1973-10-09 Forming polyethylene terephthalate
FR2389478A1 (en) * 1977-05-04 1978-12-01 Rhone Poulenc Ind
GB2009029A (en) * 1977-12-02 1979-06-13 Yoshino Kogyosho Co Ltd Process for preparing saturated polyester resin bottles
GB2055672A (en) * 1979-08-07 1981-03-11 Yoshino Kogyosho Co Ltd Method of blow moulding bottle of saturated polyester
GB2085798A (en) * 1980-10-22 1982-05-06 Goodyear Tire & Rubber Process for deep stretch forming containers from polyesters
UST101205I4 (en) * 1981-01-26 1981-11-03 Molding process

Also Published As

Publication number Publication date
EP0174263A2 (en) 1986-03-12

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18D Application deemed to be withdrawn

Effective date: 19900620

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PERKINS, WILLIAN GEORGE

Inventor name: SHRIVER, CLEM BRANUM

Inventor name: RICHESON, DONALD EDWARD